diff --git a/gtk/CMakeLists.txt b/gtk/CMakeLists.txt
index 6b3c34fb..6cc9f1ba 100644
--- a/gtk/CMakeLists.txt
+++ b/gtk/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 project(snes9x-gtk VERSION 1.61)
 
 option(USE_SLANG "Build support for slang-type shaders" ON)